SUFFOLK COUNTY

NPDES permit NY0104809 · Major POTW · administratively continued, expires 2019-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2019-12-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

21values over a limit
0required values missing, on 0 form(s)
3of 26 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (14), Solids, settleable (7).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (63)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 7600 lb/d all year
001Solids, total suspendedMO AVG <= 10350 lb/d all year
001Solids, total suspended7 DA AVG <= 11000 lb/d all year
001Solids, total suspended7 DA AVG <= 15200 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, settleableDAILY MX <= .3 mL/L all year
001Nitrogen, nitrite total [as N]DAILY MX report only all year
001Nitrogen, nitrite total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX <= 12 lb/d (alert) all year
001Arsenic, total [as As]DAILY MX <= 16 lb/d (alert) all year
001Copper, total [as Cu]DAILY MX <= 13 lb/d (alert) all year
001Copper, total [as Cu]DAILY MX <= 17 lb/d (alert) all year
001Thallium, total [as Tl]DAILY MX <= 6.3 lb/d (alert) all year
001Thallium, total [as Tl]DAILY MX <= 8.4 lb/d (alert) all year
001Zinc, total [as Zn]DAILY MX <= 23 lb/d (alert) all year
001Zinc, total [as Zn]DAILY MX <= 30 lb/d (alert) all year
001ChloroformDAILY MX <= 1.4 lb/d (alert) all year
001ChloroformDAILY MX <= 1.85 lb/d all year
001Phenolics, total recoverableDAILY MX <= 7.2 lb/d (alert) all year
001Phenolics, total recoverableDAILY MX <= 9.5 lb/d (alert) all year
001TolueneDAILY MX <= .4 lb/d (alert) all year
001TolueneDAILY MX <= .53 lb/d (alert) all year
001Methylene chlorideDAILY MX <= 5.5 lb/d (alert) all year
001Methylene chlorideDAILY MX <= 7.3 lb/d (alert) all year
001TetrachloroethyleneDAILY MX <= .4 lb/d (alert) all year
001TetrachloroethyleneDAILY MX <= .53 lb/d (alert) all year
001Nitrogen, ammonia, total [as NH3]MO AVG <= 16.43 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia, total [as NH3]MO AVG <= 48.5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia, total [as NH3]DAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia, total [as NH3]DAILY MX <= 14.6 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia, total [as NH3]MO AVG report only all year
001Nitrogen, ammonia, total [as NH3]DAILY MX report only all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 1.7 lb/d (alert) all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 2.25 lb/d (alert) all year
001Flow, in conduit or thru treatment plantMO AVG <= 30.5 MGD all year
001Flow, in conduit or thru treatment plantMO AVG <= 40.5 MGD all year
001Chlorine, total residualDAILY MX <= 3 mg/L all year
001Mercury, total [as Hg]DAILY MX <= 200 ng/L all year
001Coliform, fecal general30DA GEO <= 200 #/100mL all year
001Coliform, fecal general7I <= 400 #/100mL all year
001Coliform, total generalMO MED <= 700 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 6400 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 8500 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 10000 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 13500 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Carbonaceous oxygen demand, % removalMO AV MN >= 85 % all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states